Dontis used when referring to the object of
a deprepositional
phrase: ce dont je me souviens.However, de quior duquel( de laquelle, desquels, desquelles)
must be used instead
of dontwhen dejust happens
to end a compound preposition
( à gauche de, au contraire de): autour de qui on trouve des amis noblesGuy,
(Guy, around whom one finds noble
friends); la salle ou milieu de laquelle il dansait(the
room in the middle of which he was dancing).